JP2517626B2 - Communications system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to first and second communication terminals connected to an ISDN first network terminating device and having different attributes, and an ISDN second network terminal.
The present invention relates to a communication system comprising third and fourth communication terminals, which are connected to the network terminating device of FIG.

[Conventional technology]

As an example of a data communication network, in a service integrated digital network (hereinafter referred to as ISDN), a network type terminal (NT) connects one subscriber line to a subscriber line, and a bus type wiring is provided in the subscriber's home to make one subscription. Up to 8 telephones and data communication devices can be connected to the private line.

Here, there is a function called change of service as one of services provided by ISDN to users. This is the attribute of the data to be transferred (eg voice data on a phone,
This is a service that allows you to change image data for fax machines and character data for teletex without disconnecting and reconnecting calls.

In this service, for example, when telephone A is talking to telephone B via ISDN, when it is desired to transmit facsimile data from the facsimile device on telephone A to the facsimile device on telephone B, after the communication is completed, telephone A transmits IS.
When a service request is issued to the DN, the facsimile device connected to the same subscriber bus as the telephone A is connected to the facsimile device connected to the same subscriber bus as the telephone B without disconnecting or reconnecting the call. You can send document data from.

[Problems to be solved by the invention]

However, in the above-mentioned conventional example, when performing a change of service from the telephone to the facsimile machine, it is necessary to set the original document to be transmitted on the original plate of the facsimile machine, which is troublesome.
Further, when a large number of originals are desired to be transmitted, all the originals cannot be set in the automatic document feeder, so that the operator has to reset the originals at any time.

The present invention solves the above-mentioned conventional problems. Once a line is connected between a first network terminating device and a second network terminating device, the line is used to generate a first network. The communication service can be transferred to the communication terminal having different attributes in the terminating device and the second network terminating device, and the communication efficiency can be improved. Further, in the second communication terminal to which the communication service has been transferred, when the service is transferred, Since the data to be transmitted is stored in the memory in advance, it is an object of the present invention to provide a communication system capable of improving the operability of an operator when transferring a service.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the communication system of the present invention comprises a first communication terminal and a second communication terminal which are connected to a first network termination device of ISDN and have different attributes, respectively. In a communication system comprising third and fourth communication terminals each of which is connected to the second network terminating device and has different attributes, the second communication terminal is configured to transmit from the first communication terminal via the ISDN. A storage unit that stores data to be transmitted when a communication request is made, and an IS between the first communication terminal and the third communication terminal.
ISDN from the first communication terminal when the DN line is connected
Determining means for determining whether there is a request for changing the communication attribute via the communication means; and determining that there is a request for changing the communication attribute by the determining means, the first communication terminal and the third communication terminal. Using the ISDN line used by the communication terminal of
And transmitting means for transmitting the data stored in the storage means to the communication terminal.

〔Example〕

An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a diagram showing an ISDN network configuration showing an embodiment of the present invention.

In the figure, 1 is an ISDN for exchanging digital data such as image data, character code, and voice data,
2A, 2B, 2C are bus-type speech paths 3A to which multiple terminals such as ISDN, telephones, facsimile devices, mixed mode terminals, etc. are connected,
Network terminator (hereinafter referred to as NT), which is an interface connecting 3B and 3C, 4, 6 and 9 are bus type communication paths 3A and 3 respectively.
Digital telephones connected to B and 3C, 5 are mixed mode terminals capable of transmitting and receiving image data and charactor codes, 7 and 10 are facsimile devices, and 8 is teletex capable of transmitting and receiving only charactor codes.

In the above configuration, in the present embodiment, the telephone 4 and the telephone 6
After the call ends, the telephone 4 requests the change of service so that the image data stored in the mixed mode terminal 5 is transmitted to the facsimile device 7.

FIG. 2 is a diagram showing a procedure when the telephone 4 requests a change of service.

The same components as those in FIG. 1 are designated by the same reference numerals and the description thereof is omitted.

First, in S1, it is assumed that a telephone call is being made between the telephone set 4 and the telephone set 6. After the call, the image data from the mixed mode terminal 5 is connected to the telephone 6 on the same bus 3B.
If you want to send to the above terminal, request the change of service from the telephone 4 in S2. At this time,
The fact that image data is transmitted is attached to the of service as an attribute. In response, the network calls a terminal capable of image data communication in S3. Mixed mode terminal 5
Responds to this call with S4. In S5, the network informs the mixed mode terminal 5 that the Bch used for the call is released, and the mixed mode terminal 5 responds to this in S6.

Similarly, the ISDN also connects to the facsimile device 7 at S7, S8, S9, and S10 on the side of the network terminating device 2B.

When the connection is completed, a connection completion notification is sent to each terminal in S11 and S12, G4 protocol is performed between both terminals in S13, and image data is transmitted from the mixed mode terminal 5 to the facsimile device 6.

FIG. 3 is a block diagram showing details of the mixed mode terminal 5, and FIG. 4 is a perspective view of the mixed mode terminal 5.

The facsimile body 20 includes a reader / printer interface 21, an image compression unit (hereinafter referred to as "ICU") 22, and a program memory (hereinafter referred to as "PME").
M ”) and Bitmove Unit (hereinafter“ BMU ”)
24) and image memory (hereinafter referred to as “IMEM”)
25, a video RAM (hereinafter referred to as “VRAM”) 26, a CPU 27 that controls the entire apparatus, a communication interface 28, a bus 29, and a communication control unit (hereinafter referred to as “CCU”) 30. Have.

ICU22 compresses or decompresses data,
The PMEM23, which uses two-dimensional compression (high compression) to increase the coding rate, is an OS for controlling the input / output devices provided around the facsimile main body 20 and each unit in the facsimile main body. It has a program and application program memory area and also has a font memory area for converting character code into image data.

PMEM23 is a memory management unit (MME
U), and also has a work area as a buffer of transmission data for transmitting from the hard disk via the CCU 30 and storing from the CCU 30 to the hard disk. The buffer is for speed adjustment of the disk, line, etc.

The BMU 24 edits an image (image processing) in the CRT 60, and enlarges, reduces, rotates, moves, or cuts a predetermined image.

IMEM25 can store images from readers or BMU24
It stores the edited image by, the data expanded by ICU22, the word processing code data by key code charactor, the mixed data, or the data in which the charactor code is exchanged for the image. Here, in the case of mixed data, an identification code is added to the image block and the digital block and stored. The IMEM 25 is for temporarily storing predetermined data to match the speed of the reader 10 and the line 40, and the VRAM 26 is for storing image data to be displayed on the CRT 60 by a bit map code.

A hard disk device 50 and a floppy disk device 51 are provided as external storage devices. Although these devices are non-volatile memories, a battery backup memory may be used as the non-volatile memory.

The keyboard 61 is for inputting characters and the like, and for specifying a position on the CRT 60 using a cursor. 62
Is one of the pointing devices. In addition, a printer 70 is provided.

Based on the above configuration, the mixed mode terminal of this embodiment divides data containing mixed charactor code data and image data into charactor code blocks and image blocks, respectively, and transmits / receives them.

FIG. 5 is a flow chart showing the control operation of the CPU 27 of this embodiment.

An embodiment of the present invention will be described in detail below with reference to the flow chart of FIG.

First, in step S20, the document to be transmitted is registered when there is a request for change of service. The text is stored as a file on the hard disk 50.
Separately from this, a transmission queue for change of service is registered in the program memory 23.

Here, the transmission queue will be described. FIG. 6 is a diagram for explaining the transmission queue, and 68 and 69 are programs stored in the program memory (PMEM), which are controlled by the CPU 27. The communication management program is a program for registering the transmission queue 70, and the communication program 69 is a program for analyzing the transmission procedure and the transmission queue 70 for communication.

First, FIG. 7 (a) shows the structure of a transmission queue in general time designation communication.

Reference numeral 71 is a queue ID indicating the type of transmission queue, which identifies time designation communication, polling transmission, and the like. Reference numeral 72 is a data destination, 73 is a transmission time, and 74 is a file name of a transmission document file (hard disk 50).

The transmission program 69 analyzes this transmission queue (a),
At the transmission time 73, the file with the file name 74 is transmitted to the transmission destination 72. The file is read from the document file 50 and the CCU40
To send via.

FIG. 7 (b) is a transmission queue for change of service, 75 is a queue ID indicating transmission at the time of change of service, and 76 is a transmission document file name.

That is, when the document is registered in step S20, the transmission queue shown in FIG. 7 (b) is registered in the program memory 23 by selecting the data for change of service from the keyboard 61.

In step S21 of FIG. 5, waiting for an incoming call from the network (FIG.
3). If an incoming call is received at step S22, it is determined whether this call is a change of service call. If Yes, step S13 is performed to indicate the change of service C
Turn on SFlag. In step S24, the response to the incoming call is returned (S4 in FIG. 2), and in step S25, the BCH of ISDN is waited for connection (FIG. 2 (S11)). If Bch is connected, it is determined in step S26 whether CSFlag is ON, and then in step S27, it is determined whether a transmission queue for change of service is registered in the program memory 23.

If either one is NO, step S31 waits for a transport connection, and step S32 starts normal data transmission. If both Steps S26 and S27 are Yes,
Step S28 connects the transport from its own terminal, and step S29 connects the session. When the session connection is terminated in step S29, the process proceeds to step S33 to determine whether there is a change of service queue. The document that matches the file name is read out from the document file 50 and transmitted.

The processing of steps S33 and S35 is continued until the transmission queue of change of service disappears, and when the transmission queue of change of service disappears, the process proceeds to step S34.
Performs call disconnection processing.

As described above, according to the above-described embodiment, by providing the transmission queue for the change of service separately from the normal transmission queue, it is possible to store the data to be transmitted during the change of service with a simple configuration. In addition, when the change of service is requested, the data of the change of service can be surely transmitted to the other party only by transmitting the data of the queue.

Further, even if a large number of documents are transmitted at the time of change of service, or if there are a plurality of documents (one set of documents), the operator on the transmitting side only needs to store the prediction data. The operation at the time of change of service becomes extremely easy, and the effect of communication efficiency is great. In the above-mentioned embodiment, the transmission document file 50 (FIG. 6) is composed of one,
Data for files for timed transmission, files for polling transmission, files for change of service, and files for separate configuration, and data stored in files for change of service only during change of service It is also possible to transmit all the.

Next, as a second embodiment, a case will be described in which the identification data of the other party is added to the data transmitted at the time of change of service and registered. FIG. 8 is a diagram showing the transmission queue at that time, which is different from FIG. 7 (b) in that the symbol 80 of the partner terminal is added.

To use this transmission queue, the step shown in FIG.
When the data is stored in the hard disk device 50 for change of service in S20, the symbol of the partner terminal to which the data is transmitted is input from the keyboard 61.

As a result, even at the time of change of service, it is possible to transmit only the data in which the abbreviations of the partner terminals match.

Here, the symbol of the partner terminal will be described. FIG. 9 shows the format of the terminal identification information. The identification information in FIG. 9 is used as an identifier of the calling side and the called side, respectively. The abbreviation of the above-mentioned partner terminal is the part 4 of FIG.
Corresponds to the subscriber code.

It should be noted that the abbreviation of the terminal is written in 80 of the transmission queue of FIG. 8 and the identifier is compared with the identifier sent from the other party in the session connection (step S29 in FIG. 5). This is because the part 4 in the figure is inevitably sent, but all the parts 1 to 4 shown in FIG. 9 are not necessarily sent.

Fig. 10 shows the case where, when a request for change of service is received, a document in which the abbreviation 80 of the partner terminal of the sending queue and the abbreviation (Part 4) actually sent from the partner are transmitted. It is a flow chart.

The same step numbers are assigned to the steps that perform the same processes as in FIG. 5, and the description thereof will be omitted.

First, in step S40, the data is transferred to the hard disk device 5
When registering at 0, enter the abbreviation of the change of service and the partner terminal to be transmitted from the keyboard 61.

As a result, the transmission queue in the format shown in FIG. 8 is registered in the program memory 23.

Then, in step S29, the session connection is performed, and at this time, the terminal identifiers are exchanged between the terminals 0. At step S30, the symbol of the other terminal is read. In step S41, the transmission queue that matches this code is searched for, and in step S35
Then, the data is read from the hard disk 50 and transmitted.

As described above, according to the second embodiment, the change of
By registering the data to be transmitted at the time of service together with the terminal code of the transmission destination, only the document having the matching terminal code can be transmitted at the time of service check.

In this way, if data for multiple terminals are registered with abbreviations in advance, each terminal can be operated with a simple operation such as telling that the data will be sent by telephone and then selecting the change of service. It is possible to send data according to the above after confirmation by the partner operator.

Incidentally, in the above-mentioned embodiment, the image data is transmitted at the time of change of service, but this can also be realized by the charactor code. Further, the terminal is not limited to the mixed mode terminal and may be a facsimile or a teletex alone.

〔The invention's effect〕

As described above, according to the present invention, the line is provided between the first communication terminal connected to the ISDN first network terminating device and the third communication terminal connected to the second network terminating device. When the second communication terminal connected to the first network terminator determines that there is a change in the communication attribute from the first communication terminal via ISDN when When the line is connected once between the first network terminator and the second network terminator by transmitting the data stored in the storage means to the fourth communication terminal, the line is used to The communication service can be transferred to the communication terminals having different attributes in the first network terminating device and the second network terminating device, the communication efficiency can be improved, and the service can be provided in the second communication terminal to which the communication service has been transferred. Since the data to be sent when it is migrated is stored in the memory in advance, the service is migrated. It is possible to improve the operator's operability at the time of.

[Brief description of drawings]

FIG. 1 is a diagram showing an ISDN network configuration showing an embodiment of the present invention, FIG. 2 is a diagram showing a connection control procedure of change of service, and FIG. 3 is a mixture in the present embodiment. FIG. 4 is a block diagram of the mode terminal, FIG. 4 is a perspective view of the mixed mode terminal in the present embodiment, FIGS. 5 and 10 are flow charts showing the control executed by the CPU 27 of the present embodiment, and FIG. FIG. 7 is a diagram for explaining the transmission queue, FIGS. 7 and 8 are diagrams showing the structure of the transmission queue, and FIG. 9 is a diagram showing the format of the identification information of the terminal. 1 is ISDN, 2A, 2B, 2C are network terminators, 3A, 3B, 3C are bus type communication channels, 4, 6 and 9 are telephones, 5 are mixed mode terminals, 7 and 10
Is a facsimile machine, and 8 is a teletex.

Claims (1)

(57) [Claims] 1. A first and second communication terminal connected to an ISDN first network terminating device and having different attributes, respectively, and an ISDN second terminal.
In a communication system comprising third and fourth communication terminals, which are connected to the network terminating device and have different attributes, the second communication terminal requests the communication from the first communication terminal via the ISDN. Storage means for storing data transmitted when there is an ISDN between the first communication terminal and the third communication terminal
When the line is connected, a discriminating unit for discriminating whether or not there is a request for changing the communication attribute from the first communication terminal via ISDN; and a request for changing the communication attribute by the judging unit. When it is determined that there is one, the data stored in the storage means is transmitted to the fourth communication terminal using the ISDN line used by the first communication terminal and the third communication terminal. A communication system comprising: a transmitting unit.